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Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge T43.7 - Deschutes River, south of Oakbrook, Oregon, Line Segment 053, Milepost 43.65, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge T43.7 - Deschutes River, south of Oakbrook, Oregon, Line Segment 053, Milepost 43.65, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge T39.7 - Oak Canyon, Oakbrook, Oregon, Line Segment 053, Milepost 39.70. Sheet SS - 510, 1953.

Spokane, Portland and Seattle Railway Engineering Drawing: T43.7 and T44.0 Stress Sheet, Bridge T43.7 - Deschutes River, south of Oakbrook, Oregon, Line Segment 053, Milepost 43.65. Sheet Z - 6 - 13 - 2, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: T43.7 and T44.0 General Plan, Bridge T43.7 - Deschutes River, south of Oakbrook, Oregon, Line Segment 053, Milepost 43.65. Sheet Z - 6 - 13 - 1, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: T43.7 and T44.0 Floor System, Bridge T43.7 - Deschutes River, south of Oakbrook, Oregon, Line Segment 053, Milepost 43.65. Sheet Z - 6 - 13 - 5, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: T43.7 and T44.0 Bents, Bridge T43.7 - Deschutes River, south of Oakbrook, Oregon, Line Segment 053, Milepost 43.65. Sheet Z - 6 - 13 - 10, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Steel Shims, Bridge T39.7 - Oak Canyon, Oakbrook, Oregon, Line Segment 053, Milepost 39.70, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Steel Details, Bridge T39.7 - Oak Canyon, Oakbrook, Oregon, Line Segment 053, Milepost 39.70. Sheet NO - 377, undated.